A reloader never knows when a part might break. Be prepared for anything with these high quality factory replacement parts that will have your RCBS Rock Chucker, Rock Chucker JR, Reloader Special and most "C-Frame" single stage presses running like new.
Fits: RCBS Rock Chucker Function: Replacement Large Primer Plug, Sleeve and Spring Material: Steel Notes: Works with Large Pistol and Rifle Primers
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